PVDF-supported graphene foam as a robust current collector for lithium metal anodes. Issue 35 (2nd June 2020)

• Record Type: Journal Article
• Authors: Shi, Liurong; Hu, Zhipeng; Hong, Ye
• Is Part Of: RSC advances. Volume 10:Issue 35(2020)
• Page Start: 20915
• Page End: 20920
• Publication Date: 2020-06-02
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/d0ra03352a
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : A robust lithium metal anode comprising of PSGF current collector showing long cycling life. Abstract : Lithium metal batteries have drawn much attention due to their ultrahigh energy density. However, the safety hazards and limited lifetime caused by severe lithium dendrite growth during cycling hinder their real application. To address this issue and improve the electrochemical performance of current lithium batteries, a current collector beyond the traditional copper foil for lithium anodes is highly needed. We proposed and prepared a PVDF-supported graphene foam (PSGF) structure as an effective current collector for lithium metal anodes. Because of its structural stability, large surface area, and lithiophilic surface chemistry, the corresponding lithium metal anode (PSGF@Li) shows an extended cycling life (∼1000 h), a decreased voltage hysteresis (∼80 mV) and an improved coulombic efficiency (∼99%). Furthermore, the practical application of the PSGF@Li anode in a full cell system was also demonstrated.